In 2010 worldwide biofuel production reached 105 billion liters (28
billion gallons US), up 17% from 2009, and biofuels provided 2.7% of the
world's fuels for road transport, a contribution largely made up of
ethanol and biodiesel. Global ethanol fuel production reached 86 billion liters (23 billion gallons US) in 2010,
with the United States and Brazil as the world's top producers,
accounting together for 90% of global production. The world's largest
biodiesel producer is the European Union, accounting for 53% of all biodiesel production in 2010. As of 2011, mandates for blending biofuels exist in 31 countries at the national level and in 29 states/provinces. According to the International Energy Agency, biofuels have the potential to meet more than a quarter of world demand for transportation fuels by 2050.